Reality Carnival Clifford Pickover's engaging and unusual mind & consciousness site.
Typology Central Free massive forum on all things related to Myers-Briggs, including cognitive functions, Kiersey temperaments, and much more. An incredible range of topics and viewer discussions.
Kevin Powell of CodePen Mind Bluff's new navigation system uses the mega menu coding work of Kevin Powell to enhance the user's experience throughout the hundreds of pages of this website. Thanks, Kevin!
Wild Mood Swings Pick your mood, click the button and Wild Mood Swings will open an appropriate website in a new window.
www.puzzle.ro Find various puzzles and contests: mechanical puzzles, 2D puzzles, 3D puzzles, logic games and anagram puzzles, some of them used in TV Game-Shows, SMS contests or online contests.
Mark Parkinson "The most comprehensive list of practice psychometric tests & questionnaires available on the web. Essential preparation for graduates, job hunters and those revising for university entrance tests."
Puzzles.COM "The world's best resource for puzzling on the Internet is
about Puzzles, Illusions, Tricks, Toys, and everything around all these
Great, Funny, Entertaining, Intellectual and Educational Things."
Fundrum My Conundrum From the Site Description: "Remove all assumptions and try some of these puzzles and riddles. Our family collected our 100 favorite brainteasers of various types into this great book. Enjoy."
Braintenance: Mind Builders Insightful, entertaining blog of Douglas Castle on mind-exercisers: illusions, problems, and puzzle links. Also featured are paradoxes, intelligent widgets, and interesting musings. Updated regularly.